Only just seen this thread.
I've been playing video games since the Sinclair Spectrum.

Then moved on to the Atari ST, and then PlayStations. During my latter PlayStation periods it has been mainly the Gran Turismo racing games. I am rubbish at it, but enjoyed them. Been disappointed with the last couple though, especially now that you need to be connected to the Internet to actually have a working game.

Anyway, despite having PC's for about 20 years, I never gamed on them. I really liked Railroad Tycoon on the Atari many years ago, but never found a port, or anything similar, though I wasn't looking too hard. 3-4 years ago a video popped up on YT by a chap called
Biffa playing Cities Skylines. He was very entertaining, and the game looked like it could scratch my Railroad Tycoon itch.
It is a city building game, but it can be played in a number of ways. You can build a city from bare map, road layout, zoning residential, commercial etc, set up transport, trash, all kinds of things, whilst trying not to go bust.

You can take the financial constraints away and just build what your imagination leads you. There are scenarios, where you are given a built city, and asked to complete a scenario, such as making 1m cims travel my public transport etc in a certain number of weeks. There was a very active modding community which took the game way beyond what the game originally was. You could really play it any way you wanted. I enjoyed that for a few years.
They released Cities Skyline II just over a year ago, and despite a very bad release, it is starting to get close to the original for modding, and will hopefully get better as we go forward. It is missing the scenario challenges of the first game, which I enjoyed, and the asset modding option is not there yet, as the assets people created were insane in the previous game, but it is a lovely looking game compared to the original, and some dedicated detail players made that look amazing.
For me, there is something really satisfying about designing a city, and it all working, and the population growing, and not going bust.

It gives me what I craved for from Railroad Tycoon, but a 1000% more.